hey my foreskin can come back over the head of my penis both when erect and when soft but when its erect or soft i have to pull my foreskin back manually is this normal???oh and my penis is 3 and a half when soft and 6 and a half when hard and im 13 is this normal(size in cm)???? and if it is normal when will my penis grow (when i am what age) thank for your help bye (it is apreciated!!)

In some guys the foreskin comes back by itself on erection, and in some guys it has to be pulled back manually. Both are fine.

The penis has a big growth spurt in puberty, but when and how vary a lot between different people. Some start early and some later; some have slow growth over quite a few years and some have quicker growth over a shorter time. It's therefore impossible to predict exactly when you will grow, but it should start some time in the next two years.